Star · M4V
WISEA J204902.80-745613.5
WISEA J204902.80-745613.5 is a main-sequence star of spectral type M4V in the constellation Octans, 130.5 light-years from the Sun.
| Constellation | Octans |
|---|---|
| Distance | 130.5 light-years (40.0 pc) |
| Apparent magnitude | magnitude 23.29 |
| Absolute magnitude | magnitude 20.28 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.21 × 10⁻⁵ L☉ |
| Radius | 0.0131 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 20h 49m 02.6s |
| Declination (J2000) | −74° 56′ 12″ |
| Space velocity (relative to the Sun) | 28.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 23.29. Visible from the whole Southern Hemisphere and north to latitude 15° N. South of latitude 15° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1896. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.3 million years.
The Sun seen from there
From a planet around WISEA J204902.80-745613.5, the Sun would look like a star of magnitude 7.84, in the direction where our sky has the constellation Camelopardalis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 102128 1.43 light-years
- HD 196067 1.43 light-years
- HIP 100280 4.44 light-years
- HIP 98764 8.95 light-years
- HIP 108158 11.8 light-years
- HIP 106391 13.0 light-years
- HIP 103654 13.2 light-years
- HIP 96880 13.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.